Application of a DNA-based luminescence switch-on method for the detection of mercury(II) ions in water samples from Hong Kong

Hong Zhang He*, Ka Ho Leung, Wai Chung Fu, Daniel Shiu Hin Chan, Chung Hang Leung, Edmond Dik Lung MA

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

13 Citations (Scopus)

Abstract

Mercury is a highly toxic environmental contaminant that damages the endocrine and central nervous systems. In view of the contamination of Hong Kong territorial waters with anthropogenic pollutants such as trace heavy metals, we have investigated the application of our recently developed DNA-based luminescence methodology for the rapid and sensitive detection of mercury(II) ions in real water samples. The assay was applied to water samples from Shing Mun River, Nam Sang Wai and Lamma Island sea water, representing natural river, wetland and sea water media, respectively. The results showed that the system could function effectively in real water samples under conditions of low turbidity and low metal ion concentrations. However, high turbidity and high metal ion concentrations increased the background signal and reduced the performance of this assay.

Original languageEnglish
Article number044032
JournalEnvironmental Research Letters
Volume7
Issue number4
DOIs
Publication statusPublished - Oct 2012

Scopus Subject Areas

  • Renewable Energy, Sustainability and the Environment
  • Environmental Science(all)
  • Public Health, Environmental and Occupational Health

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